package cn.tedu.sp06;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.circuitbreaker.EnableCircuitBreaker;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.context.annotation.Bean;
import org.springframework.http.client.SimpleClientHttpRequestFactory;
import org.springframework.web.client.RestTemplate;
@EnableCircuitBreaker
@SpringBootApplication
public class DemoApplication {

	public static void main(String[] args) {
		SpringApplication.run(DemoApplication.class, args);
	}


	/**
	 * 创建RestTemplate实例
	 * 放入spring容器
	 *
	 * @LoadBalanced  对RestTemplate进行增强，封装restTemplate ，实现负载均衡
	 * @return
	 */

	@Bean
	@LoadBalanced
	public RestTemplate restTemplate(){
		//设置调用超时时间，超时后认为调用失败
		SimpleClientHttpRequestFactory f =new SimpleClientHttpRequestFactory();
		f.setConnectTimeout(1000);  //建立连接等待时间
		f.setReadTimeout(1000);  //建立连接后，发送请求后，等待接收响应的时间

		return new RestTemplate();
	}

}
